| The Unfertilized Egg The live picture of this unfertilized egg at time zero shows the egg surrounded by its jelly layer. | The Fertilized Egg The fertilization membrane (halo around the egg) and ovum are clearly seen in this live picture at a time of ½ min to 5 min. |
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| The Two-Cell Stage This live picture shows the embryo after the first cleavage, time: one to three hours. | The Morula The group of cells inside the fertilization membrane is the morula this occurs between 18 and 24 hours after fertilization and is the stage before the blastula (live picture). |
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